![Why are you on a diet?
Why are you on a diet?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Why are you on a DIET?
The Big Bang Theory Season 7, Episode 2
![](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
"Wil, do you want more Diet Coke?
The Big Bang Theory Season 8, Episode 20
![Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?
Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
Playing Halo? Watching Battlestar?
Drop some Mentos in Diet Coke?
The Big Bang Theory Season 2, Episode 19
![His diet is rich in fatty deli meats.
His diet is rich in fatty deli meats.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
His DIET is rich in fatty deli meats.
The Big Bang Theory Season 6, Episode 9
![How hard is 65% Coke,
35% Diet Coke?
How hard is 65% Coke,
35% Diet Coke?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
How hard is 65% Coke,
35% Diet Coke?
The Big Bang Theory Season 12, Episode 23